Johannes Kepler
Johannes Kepler
Johannes Keplerwas a German mathematician, astronomer, and astrologer. A key figure in the 17th century scientific revolution, he is best known for his laws of planetary motion, based on his works Astronomia nova, Harmonices Mundi, and Epitome of Copernican Astronomy. These works also provided one of the foundations for Isaac Newton's theory of universal gravitation...
NationalityGerman
ProfessionScientist
Date of Birth27 December 1571
CountryGermany
mean science simple
I am much occupied with the investigation of the physical causes [of motions in the Solar System]. My aim in this is to show that the celestial machine is to be likened not to a divine organism but rather to a clockwork ... insofar as nearly all the manifold movements are carried out by means of a single, quite simple magnetic force. This physical conception is to be presented through calculation and geometry.
science differences path
So, Fabricius, I already have this: that the most true path of the planet [Mars] is an ellipse, which Dürer also calls an oval, or certainly so close to an ellipse that the difference is insensible.
art science sky
There will certainly be no lack of human pioneers when we have mastered the art of flight....Let us create vessels and sails justed to the heavenly ether, and there will be plenty of people unafraid of the empty wastes. In the meantime we shall prepare, for the brave sky-travelers, maps of the celestial bodies.
reading science men
Astronomy would not provide me with bread if men did not entertain hopes of reading the future in the heavens.
fall reading science
I myself, a professional mathematician, on re-reading my own work find it strains my mental powers to recall to mind from the figures the meanings of the demonstrations, meanings which I myself originally put into the figures and the text from my mind. But when I attempt to remedy the obscurity of the material by putting in extra words, I see myself falling into the opposite fault of becoming chatty in something mathematical.
lying science heaven
I used to measure the Heavens, now I measure the shadows of Earth. The mind belonged to Heaven, the body's shadow lies here.
science mystery reason
Eyesight should learn from reason.
nature science simplicity
Nature uses as little as possible of anything.
science
Why are things as they are and not otherwise?
cause hidden safe
So long as the mother, Ignorance, lives, it is not safe for Science, the offspring, to divulge the hidden cause of things
borne earth inhabited means
I demonstrate by means of philosophy that the earth is round, and is inhabited on all sides; that it is insignificantly small, and is borne through the stars.
dwell lords shall worlds
But who shall dwell in these worlds if they be inhabited?....Are we or they Lords of the World?....And how are all things made for man?
distance mean squares
The squares of the periodic times are to each other as the cubes of the mean distances.
miracle doe crowds
He who will please the crowd and for the sake of the most ephemeral renown will either proclaim those things which nature does not display or even will publish genuine miracles of nature without regard to deeper causes is a spiritually corrupt person... With the best of intentions I publicly speak to the crowd (which is eager for things new) on the subject of what is to come.